Sei-ichiro Suga   Kensuke Inaba   
INTERNATIONAL CONFERENCE ON STRONGLY CORRELATED ELECTRON SYSTEMS (SCES 2010) 273 2011年 [査読有り]
We investigate finite-temperature properties of three-component (color) repulsive fermionic atoms in optical lattices at half filling using a self-energy functional approach. For a certain anisotropy of the interactions, we find a color density-wa...
Shinya Miyatake   Kensuke Inaba   Sei-ichiro Suga   
PHYSICA C-SUPERCONDUCTIVITY AND ITS APPLICATIONS 470 S916-S918 2010年12月 [査読有り]
We investigate quantum phase transitions of three-component (colors) repulsive fermionic atoms in optical lattices, using dynamical mean field theory. For the isotropic interaction system, a Mott transition occurs at commensurate 1/3 and 2/3 filli...
Kensuke Inaba   Shin-ya Miyatake   Sei-ichiro Suga   
PHYSICAL REVIEW A 82(5) 2010年11月 [査読有り]
We investigate the Mott transitions of three-component (colors) repulsive fermionic atoms in optical lattices using the dynamical mean-field theory. We find that for SU(3) symmetry-breaking interactions, the Mott transition occurs at incommensurat...
Hitoshi Yoshizumi   Tomoko Kita   Sei-ichiro Suga   
PHYSICA E-LOW-DIMENSIONAL SYSTEMS & NANOSTRUCTURES 42(4) 868-870 2010年2月 [査読有り]
We investigate the Kondo effect of a multiorbital quantum dot coupled to ferromagnetic leads, using an equation of motion method. It is shown that the Kondo peak splits into three peaks and the middle one is located close to the Fermi energy. As t...
Shin-ya Miyatake   Kensuke Inaba   Sei-ichiro Suga   
PHYSICAL REVIEW A 81(2) 2010年2月 [査読有り]
We investigate three-component (colors) repulsive fermionic atoms in optical lattices using the dynamical mean-field theory. Depending on the anisotropy of the repulsive interactions, either a color density-wave state or a color-selective staggere...